A novel scheme for generating optical dark return-to-zero pulses and its application in a label switching optical network |
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Authors: | Jianjun Yu Lei Xu Yong-Kee Yeo Ji PN Ting Wang Gee-Kung Chang |
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Affiliation: | NEC Labs America, Princeton, NJ, USA; |
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Abstract: | We experimentally demonstrate a novel and simple method to generate a dark return-to-zero (RZ) pulse with tunable pulsewidth and extinction ratio by using a dual-arm LiNbO /sub 3/ intensity modulator. Our experimental results show that this dark RZ pulse signal can be used in a 10-Gb/s optical packet switching system as an optical label. In addition, we demonstrate that this dark RZ label can be easily erased using the gain saturation effect in a semiconductor optical amplifier. |
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